Bag-feeding mechanism.



G. L. HOYT. BAG- PLEDING MECHANISM. APPLICATION FILED AUG. 8. 1910.

Patented Dec. 20, 1910.

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IIIHHIIIIIIII I l'iiillifl 2X) Lin Lamas G. L. HOYT. BAG, FEEDING MEGHANISM. APPLIOAT'ION FILED AUG. 8. 1910.

978,887. I Patented Dec. 20, 1910.

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G. L. HOYT. BAG FEEDING MECHANISM. I urmonmiw FILED we. a. 191o.- 97 7; Patented Dec.20,1910.

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. UNITED srn rns rnirnn'r GUY-L. I-IOYT, on NEW YORK,- N. Y., ASSIGNOR r Bonner cam COMPAN'SLOF BROOK-" LYN,'N;EW YORK, A CORPORATION on NEW ronx. a 1

BAG-FEEDING MEcHAnIsM.

978,887. 7 Original application filed November 12,

Specification of Letters late nt.

Patented Dec. 20, 1910.

1909, Serial No. 527.724. Divided and this application filed August 8, 1910. Serial No. 576,111.

To all whom itmay concern;

Be it known that I, GUY'L. ,HorT, a citizen of the United ,States, residing at borough of Brooklyn, New York city, in

'5 the county .of Kings and State. of New York, have invented certain new and useful Improvements in Bag-Feeding Mechanism,

of which the following is a specification.

This invention relates to means for feed- 10 .ing fiat bags or envelops from a stack, and

its particular object is to provide'a simple and reliable machine having provision for engaging the open'or mouth end of the foremost envelop 1n the stack 1n order to l5 a vance it from the face of the stack. Such means may be combined with devices for loosening the remainder of the stack from the foremost envelop and for continuing the advance movement of the envelop after it has been released by the grasping means.

' My invention maybe used in conjunction with other machines, such for example as the automatic bag-filling-machlne shown in my application Serial No. 527,724, filed No-- vember 12, 1909, of which this is a division. Of the accompanying drawings, Figure 1 represents a top plan View of a bag-feeding mechanism constructed'according to my ,invention. Fig. 2 represents; a side eleva- Fig. 3 re resents a'rea-r elevation-without the stacr bolder.- Fig; 4 pr s n s wv lftioal section on an enlarged scale.

of the feed roll and relatedparts, showing a bag partiallyadvanoed. Fig. 6 represents an axial section of the feed roll. 3

.In the drawings, 30 represents a platform with vertical guides 31 and a front stop 32 for holding the bags 33 in 'a Vertical pile, 7

their flaps 34' i'mpimging against the, stop, and their under lips 35.jbeing presented.

downwardly. p 1 36ais a feed Iroll monnted on a shaft 37 I which maybe rotated by any suitable driv- 4'5 ing connection, and said-shaft carries a gear i1 whereby, through an intermediate 1-n1onandi-gear .46, driven the shaft having aipii-lle I 4 8 -which carries the lower one =;fofja. pair. o .f conveyer belts 49, the ripper 50 belt passingfaround apulley 51.hav 1ng a gear =52 Whichmeshes with the gear- 465., ;I;e e e ts u nish af 1i n me ns. o

Fig. 5 represents a vertical section filling or other mechanism by which they are further treated, but said conveyer forms no partof the present invention.

Within the feed roll is a shaft 53 carrying a gripper 54'which is retracted in the direction of rotation. of the roll by aspring said shaft having at the end of the roll an arm 56' 'whose stud 5T intermittently en gages and-is turned back\ ardly against the tension of spring by a stationary segmental 02111158. This causes a backward oscillation of the gripper .54 at a faster rate than the forward progression of the roll periphery. and the gripper thereby comes up under the flap "of the lowermost bag in the stack. causing said flap and its ply to separate from the lower .lip' enters the mouth of the bag, clamps the'lower lip 35 of the latter against the periphery of the feed roll, thereby .drawing. the end of the bag down far cession of outward, rearward and inward movements possessed by the gripper might of course be impartedby means other than those illustrated, which however are preferred on account oftheirsimplicity.

Oneither side of the single finger form- 'ing the stationary stop 32 .is mounted a fingers-acljustably mounted'on a rock shaft by a cam 62 on the shaft of the feed roll, for looseningthe remainder ofthe pack and permitting the lowermost bag to be more readily withdrawn.

;" 'itsstud 57 is released by the stationary within the periphery of the feed roll, at about which time a gear 44, whereby the'bag' is iadifanced' t the-f throat between the .conireycif belts Roll 63 is carried byifafrockiraniew operated. by ac ain 66, on. the-lawerbeltf-f enough to clear the stop-32 and the kicker 59, here nafter nient-ioned, and starts to p advance it from under the. pile. This suckicker or agitator 59 consisting of apair of 85 (30, at one end of which is an arm 61 engaged f cam 58, and springer) retrac'ts the gripper I v 95 resser roll 63. comes down uponthe peri'p cry of the; feed roll; .36 and meshes its: gear- 64 with, the F l ey. sh aft 47. whereby the freciprpcating mo tionflis imparted: which.; allows "the 1 advancing the bags in procession to the bag- A fter the gripper 54 has advanced the Y bag a short distance, as represented in Fig.

roll toys avoid the gripper. A spring (57 (Fig. 1) opposes the action of the cam.

.claim,.

1. In a machine for feeding envelop bags,

the combination of means for holding the empty bags horizontally in a stack with their flaps extended beyond their under lips, a stop against which the said flaps impinge, a feed-ro11 stationarily mounted under the forward end of the staok and cont-inuously rotated ina forward direction, a

gripper on saidroll having a movement outward from the periphery of the roll to' separate the flap ply of the lowermostbag fromits under lip, a succeeding mox ement reverse to thedirectlon 0t rot-atlon of said roll to enter the mouth of the bag, an in- 1 ward movement to clamp the lower lip of 5 the bag against the roll periphery and draw the bag down beloW the stop, and a return.

'up, a stop for engaging the advance edges t the flaps, a feeder for grasping the under lip of the lowermost bag to draw it past the stop, and an oscillating kicker fontorcing 30 back the renriinderof the stack to loosen the bag which is being fed.

In testimony whereof I have hereunto set may hand in the presence of two subscribing Witnesses, this 5th day of Aug. 1910.

GUY L. HOYT.

Witnesses W. J'. DUDLEY, Jonx 3i, ROBENSTEIN, Jr. 

